/**
 * Copyright 2000 self.com.au
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. (http://www.apache.org/licenses/LICENSE-2.0)
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed 
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for 
 * the specific language governing permissions and limitations under the License.
 *
 * <dhamma-message src="Atisha (11th century Tibetan Buddhist master)">
 * 	The greatest achievement is selflessness. The greatest worth is self-mastery.
 * 	The greatest quality is seeking to serve others. The greatest precept is continual awareness.
 * 	The greatest medicine is the emptiness of everything. The greatest action is not conforming with the worlds ways.
 * 	The greatest magic is transmuting the passions. The greatest generosity is non-attachment.
 * 	The greatest goodness is a peaceful mind. The greatest patience is humility.
 * 	The greatest effort is not concerned with results. The greatest meditation is a mind that lets go.
 * 	The greatest wisdom is seeing through appearances. 
 * </dhamma-message>
 *
 * @author Ashin Wimalajeewa
 */
package self.amigo.editor.sheet;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JColorChooser;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;

import self.amigo.editor.APropertySheet;
import self.amigo.editor.cmd.PropertiesChange;
import self.amigo.elem.EllipseView;
import self.amigo.elem.FillableFeature;
import self.amigo.elem.RectangleView;
import self.awt.layout.VerticalFlowLayout;
import self.gee.IEditableElement;
import self.gee.editor.IPropertySheet;

public class EllipseSheet extends APropertySheet implements IPropertySheet {
	
	/**
	 * If the internal state of this class ever changes in such a way that it can't be defaulted,
	 * then the {@link #serialVersionUID} should be incremented to ensure serialized instances cleanly fail.  
	 */
	private static final long serialVersionUID = 1;
	
  JTabbedPane         propertySheet = new JTabbedPane();
  BorderLayout        contentPaneLayout = new BorderLayout();
  JPanel              generalTab = new JPanel();
  VerticalFlowLayout  generalPaneLayout = new VerticalFlowLayout();
  JPanel              generalPane = new JPanel();
  JScrollPane         generalScroller = new JScrollPane();
  BorderLayout        generalLayout = new BorderLayout();

  JCheckBox fill = new JCheckBox();
  JLabel fillColorLabelTxt = new JLabel();

  JPanel colorPanel = new JPanel();
  JLabel fillColorLabel = new JLabel();
  JButton fillColorBtn = new JButton();
  FlowLayout flowLayout1 = new FlowLayout();

  private IEditableElement view;
  private Color                      currColor;

  public EllipseSheet() {
    try {
      jbInit();
    } catch(Exception e) {
      e.printStackTrace();
    }
  }

  private void jbInit() throws Exception {
    this.setLayout( contentPaneLayout );
    fill.setSelected(true);
    fill.setText("fill");
//    fill.setHorizontalTextPosition(SwingConstants.LEADING);
    fillColorLabelTxt.setText("color");

    generalPane.setLayout(generalPaneLayout);
    generalPane.add(fill, null);
    generalPane.add(fillColorLabel, null);
//    generalPane.add(fillColor, null);
    generalPane.add(colorPanel, null);

    generalScroller.getViewport().add( generalPane, null );
    generalTab.setLayout(generalLayout);
    generalTab.add( generalScroller, BorderLayout.CENTER );

    fillColorLabel.setBackground(new Color(192, 192, 20));
    fillColorLabel.setOpaque(true);
    fillColorLabel.setText("               ");
    fillColorBtn.setPreferredSize(new Dimension(30, 16));
    fillColorBtn.setText("...");
    fillColorBtn.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        fillColorBtn_actionPerformed(e);
      }
    });
    colorPanel.setLayout(flowLayout1);
    flowLayout1.setAlignment(FlowLayout.LEFT);
    colorPanel.add(fillColorLabel, null);
    colorPanel.add(fillColorBtn, null);

    this.add(propertySheet, BorderLayout.CENTER);
    propertySheet.add(generalTab, "General");
  }

  public void inspect( Object toDisplay ) {
    if ( toDisplay instanceof EllipseView ) {
      view = (IEditableElement) toDisplay;
      revert();
    } else
      throw new RuntimeException("Invalid Graphic element to display:" + toDisplay );
  }

  public void accept() {
    if ( view == null )
      return;

    FillableFeature fillComp = (FillableFeature) store.get( EllipseView.FILL_PROP );
    if ( fill.isSelected() ) {
      fillComp.fillColor = currColor;
    } else
      fillComp.fillColor = null;

    PropertiesChange cmd = new PropertiesChange( editor, view, store );
    cmd.executeIfRequired();
  }

  public void revert() {
    if ( view == null )
      return;
    store.clear();
    view.getProperties( store );

    FillableFeature fillComp = (FillableFeature) store.get( RectangleView.FILL_PROP );
    currColor = fillComp.fillColor;
    fillColorLabel.setBackground( currColor );
    fill.setSelected( (currColor != null) );
  }

  public Object getObjectUnderInspection() {
    return view;
  }

  void fillColorBtn_actionPerformed(ActionEvent e) {
    Color c = querySelectColor( "Select fill color", currColor );
    if ( c != null ) {
      currColor = c;
      fillColorLabel.setBackground( c );
    }
  }

  private Color querySelectColor( String title, Color curr ) {
		return JColorChooser.showDialog( this, title,  curr );
  }
}
